Morphology and identification of the seedlings of selected woody/semi-woody species of dicotyledons sensu lato growing wild in South Florida (U.S.A.). Part II. Species with hypogeal germination

Autores/as

  • George J. Wilder Naples Botanical Garden

DOI:

https://doi.org/10.17348/jbrit.v16.i2.1261

Resumen

Aquí, describo y comparo las plántulas de 23 especies con germinación hipogea y de una con germinación intermedia entre hipogeo y epigeo. Son especies de árboles, arbustos y enredaderas leñosas de dicotiledóneas sensu lato que crecen silvestres en el sur de Florida. En esas especies, la porción del tallo de la plántula situada distal a los cotiledones consta de dos partes principales diferenciadas: sectores basal y distal del tallo. La parte basal del tallo sirve para posicionar esas hojas de follaje lo suficientemente altas sobre el suelo para interceptar la luz ambiental adecuada; por lo tanto, es funcionalmente equivalente al hipocótilo alargado en especies que tienen germinación epigea. Algunas de las especies estudiadas exhiben cotiledones que son total o parcialmente connatos y/o peltatos, a diferencia de las hojas adultas. Para cada especie carácterizo los rasgos macroscópicos de las diasporas, cotiledones, sectores basal y distal del tallo y hojas, así como la presencia vs. ausencia de los tipos y la distribución de los tricomas. Concluyo con una clave taxonómica para identificar las plántulas de todas las especies consideradas. Veintidós especies son nativas y dos exóticas en Florida.

Citas

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Publicado

2022-11-29

Cómo citar

Wilder, G. J. (2022). Morphology and identification of the seedlings of selected woody/semi-woody species of dicotyledons sensu lato growing wild in South Florida (U.S.A.). Part II. Species with hypogeal germination. Journal of the Botanical Research Institute of Texas, 16(2), 449–498. https://doi.org/10.17348/jbrit.v16.i2.1261

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